| Literature DB >> 33506762 |
Qiaowei Pan1,2, Romain Feron1,2,3, Elodie Jouanno1, Hugo Darras2, Amaury Herpin1, Ben Koop4, Eric Rondeau4, Frederick W Goetz5, Wesley A Larson6, Louis Bernatchez7, Mike Tringali8, Stephen S Curran9, Eric Saillant10, Gael Pj Denys11,12, Frank A von Hippel13, Songlin Chen14, J Andrés López15, Hugo Verreycken16, Konrad Ocalewicz17, Rene Guyomard18, Camille Eche19, Jerome Lluch19, Celine Roques19, Hongxia Hu20, Roger Tabor21, Patrick DeHaan21, Krista M Nichols22, Laurent Journot23, Hugues Parrinello23, Christophe Klopp24, Elena A Interesova25, Vladimir Trifonov26, Manfred Schartl27, John Postlethwait28, Yann Guiguen1.
Abstract
The understanding of the evolution of variable sex determination mechanisms across taxa requires comparative studies among closely related species. Following the fate of a known master sex-determining gene, we traced the evolution of sex determination in an entire teleost order (Esociformes). We discovered that the northern pike (Esox lucius) master sex-determining gene originated from a 65 to 90 million-year-old gene duplication event and that it remained sex linked on undifferentiated sex chromosomes for at least 56 million years in multiple species. We identified several independent species- or population-specific sex determination transitions, including a recent loss of a Y chromosome. These findings highlight the diversity of evolutionary fates of master sex-determining genes and the importance of population demographic history in sex determination studies. We hypothesize that occasional sex reversals and genetic bottlenecks provide a non-adaptive explanation for sex determination transitions.Entities:
Keywords: esocidae; esociforms; evolutionary biology; fish; master sex determining gene; mudminnows; pikes; sex determination; umbridae
Mesh：
Year: 2021 PMID： 33506762 PMCID： PMC7870143 DOI： 10.7554/eLife.62858
Source DB: PubMed Journal: Elife ISSN： 2050-084X Impact factor: 8.140